Hello, I have an EC21 modem in miniPCI version, I have connected the following pins UART RX + TX, USB P + N to my device. Communication with the modem using AT commands works fine on the uart port. However, the modem does not appear on the USB bus. I have USB set as a host.
My system is Debian and the kernel version is 5.4.24.So usb diver should be in the kernel
lsusb
Bus 002 Device 001: ID 1d6b: 0002 Linux Foundation 2.0 root hub
Bus 001 Device 001: ID 1d6b: 0002 Linux Foundation 2.0 root hub
Do I have to connect other pins?
or send AT command to wake up USB?
Thanks for reply